Grease cup



Aug. 26, 1924. l' D. P. oRDwAY GREASE CUP Filed March 29 a 4 4 i Y A. .PML /N Patented Aug. Z6, 1924.

DONALD l. GRDVJAY, F BATTLE GREEK, MICEIGAN, ASSIGNOR TO AMERICAN STAMP- ING CU., OF BATTLE CREEK, B'IICI-IIGAN, A CORPORATION OF MICHIGAN.

GREASE CUP.

Application led Marr-h 29, 1922.

To all irzom it may concern.'

Be it known that l, DONALD F. ORDWAY, a citizen ot the United .Stat/es? residing at ARattle Creek, in the county et Calhoun and State of ldichigan7 have invented certain new and usetul improvements in Grease Cups; and .l hereby declare that the following is a ifull7 clear, and enact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is an improvement in grease cups and its object is to provide a grease cup with novel simple and eliective means to prevent the cover working ott when the cup is used on vehicles or moving objects where it is subjected to jar or vibration.

This invention consists in the novel construction ot cup cover and locking members as hereinafter described and claimed; and the accompanying drawings illustrate practical embodiments ot the invention which will be described with reterence tnereto.

lin the said drawings:

Fig. 1 is a sectional view of a grease cup with my improved cover locking device.

Fig. 2^is a section on the line 2 2 Fig. 1.

Fig. 3 is a top plan view of the cup detached.

Fig, 4 is a section ot the cover similar to Fig. 1, showing' a simpler form ot the spring locking` member.

Fig. 5 is an inverted view et the cover detached.

The cup 1 may be ot any desired form and construction.y being shown as made ot drawn metal and having a reduced tubular polygonal portion 1` and a lower threaded stem 1"; the cup portion is eXteriorly threaded tor engagement with the internal threads ot the cup or cover 2, which may be ot any suitable construction, antl is also shown as made ot drawn metal.

In carrying out my invention I provide in or near the upper edoe of the cup 1 a plurality ot retaining` meml'iers or protuberances preferably formed in the upper inner margin of the cup 1 by pressing the metal to torni recesses as indicated at 3 in the drawings9 such depression ot the metal causes it to tlare or project inwardly also as shown at 3a, the inwardly projecting portions 3a form locking members or protuberances around and within the upper edge ot cup 1 tor engagement with a locking Serial No. 5472650.

member on the cover, and thereby preventthe cover from casually working oit or unscrewing when the cup is subjected to jarring or vibration.

i preferably provide the base l with e plurality ot radially disposed retaining members such as depressions or protuberances on its inner conical surface as shown at 1, in Figs. l toy 3, which will be engaged by the loclring member on the cover when the cover is screwed tar down on the cup, and will prevent casual unscrewing ot the cup.

As shown in Fig. the recesses termed by pressing the metal to form the locking members or protuberances do not ai'iect the eX- terior ot the cup, and leave sufficient metal tor the continuity of the threads thereon and do not lessen the capacity ot the cup. When these recesses are pressed in the upper inner margin ot the cup the adjacent metal dares out into the cup7 the point ot maximum width being adjacent the lowest portion of the recess, and such projecting portions torm, as shown in Fig. 3, simple and etiicient retaining` members or protuberances 3a above referred to.

As stated these protuberances` 3a are adapted to be engaged with a locking` member on the cover 2. Preferably such loc-lrn ing member is formed of a iiat. strip si. of spring metal the upper end ot which is securely fastened to the underside ot the top ot' the cover 2, and the strip is bent dowir ward adjacent the inner side ot the cover 2. and extends to or slightly below the lower open end ot the cover. rllhe lower free end ot the locking members is preferably cupped or rounded as at el to facilitate the operative engagement ot the cover 2 with the cup 1. The tree end of the locking member may be straight, as in Fig. d; or it may be provided with a bend 4c above the rounded part 4a, as shown in Fig. 1.

In the construction shown, the cover 2 can be very readily engaged with the cap 1, but when the threads are fairly engaged the tree end of the locking member i will come into operative engagement with the locking members or protuberances 3 and prevent casual disengagement r backing oit ot the cover trom the cup, although it will not prevent the cover being forcibly unscrewed by hand.

It the cover is screwed so tar down that the locking members do not eectively engage the radial protuberances 3a they will then have engaged the radial protuberances 'le and thus when the cover is screwed either partly or fully down it will be prevented from casual working ofi7 or unscrewing when subjected to jarring or vibration; although it may be unscrewed by hand.

The retaining spring d is preferably attached to the cover as indicated in the drawings. For this purpose the cover 2 is formed with an interior preferably elongated lug 2*L on its top, which is preferably formed integral with the cover by pressing the metal of the cover topso as to form an exterior depression 2b and an interior protuberance 2 as shown in Figs. l to '3.

The upper part of locking member 4: eX- tends diametrically or radially across the underside of the top of cover 2 and has an opening or slot therein corresponding in shape to the lug 2a, and when the slots in the member is engaged with the lug 2a the metal of thevlug is swag-ed over the edge of the slot to securely fasten the locking member 4lto the cover 2; thus forming an eliicientj economical, and oil tightl rivetl joint between the cap and locking member and obviatingany possibility of oil leaking through the riveted oint.

The invention enables the cover to be readily vengaged with the cupwhen both are filled witi grease; it preserves the full capacity of the cup for holding grease; it cheapens the cost of connecting the cover and locking members; it facilitates the assembling of the parts; and it effectively prevents the cover from being casually unscrewed from the cup by jarring or shaking of the cup and cover when the cup is applied to an automobile or other moving part.

I claim:

l. A grease cup exteriorly threaded and having integral inwardly projecting' retaining protuberances formed by depressing portions of the metal of the cup at its upper edge and inner side thereby producing inwardly projecting protuberances at the bottom oi the depression, substantially as and for the purpose specified;

2. A grease cup having interior integral protuberances adjacent its inner Lipper edge formed by depressing portions of the metal of Vthe cup at its upper edge and inner side thereby producing inwardly projecting protuberances at the bottom of the depression; a cover; and a locking member in the cover having a depending portion adapted to engage the protuberances to prevent casual unscrewing oft' the cover.

3. A grease cup having integral protuberances adjacent its inner upper edge; a cover; and a locking member in the cover having a depending portion adapted` to engage the protuberances to prevent casual unscrewing of the cover; said base also having radially disposed portions belowV the protuberances adapted to be engaged by the locking member when the cover is sufficiently screwed onto the cup.

4. A grease cup having recesses pressed in its inner side near its top thereby forming retaining protuberances adjacent its inner edge; a cover; and a locking member at-V tached to the cover and having a depending portion adapted to engage the protuberances and prevent casual unsorewing of the cup; said base also having radially disposed poi tions below the protuberances adapted to be engaged by the locking member when the cover vis suiiiciently screwed onto the cup.

5. A hollow grease cup having integral retaining protuberances formed by pressing recesses in its top and inner side; a cover; and a locking spring in the cover and rigidly attached thereto, said spring having a depending'portion adapted to engage the protuberances and prevent casual unscrewing of the cup; said base also having radially disposed portions below the protuberances adapted to be engaged by the locking member when the cover is sufiiciently screwed onto the cup.

In testimony that I claim the foregoing as my own, I affix` my signature.

DONALD r. oRDwAY. 

